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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
hormones
retractor muscles
epididymis: definition - 3 parts - 4 functions
Where livelihood is in agriculture
2. Front feet and head first. (except for hogs and dogs)
normal presentation of the fetus
polyestrous
butterfat
effects of estrogen
3. What helps regulate spermatogenesis?
testosterone
ewe estrus
effects of estrogen
femininity of a heifer
4. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
eminal vesicles
libido test (BSE)
hormones
cowper's gland
5. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
visual evaluation (BSE)
behavioral signs of estrus
sow estrus
6. Luteolysis happens because of the ____________ hormone
hormones
Blood
prostaglandin
butterfat
7. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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8. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
Culls bulls earlier (2 reasons)
sow ovulation
uterus
rectal palpation (BSE)
9. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
things to check for in a breeding soundness exam (BSE)
Dairy calves are removed from cow at birth to...
accessory sex glands
10. Birthing process (termination of gestation)
Hard
dartos muscle
eminal vesicles
Parturition
11. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
effects of estrogen
Avg. bull specs
cervix
mare gestation
12. Produce testosterone. located between the seminiferous tubules
sow gestation
leydid or interstitial cells
Hormones from both the fetus and the mom.
Follical Stimulating in females
13. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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14. 1-2 days
ewe estrus
epididymis: definition - 3 parts - 4 functions
prostaglandin
colostrum
15. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
cryptorchid
Follical Stimulating in females
16. ~305 days (altough often longer due to breeding difficulties)
Mares
spermatogenesis
Parturition
Dairy Cattle Lactation (standard)
17. Why Dairy calves are fed powdered milk.
retractor muscles
1. more cost effective - 2. powdered milk is in excess production
leydid or interstitial cells
seminiferous tubules
18. Animal which has been castrated after puberty
kidney stones also called ________ ___________ can develop in the sigmoid flexure
stag
burdizzo
estrus
19. Start of the reproductive tract for the female. located outside of the body
vulva
dairy cattle pregnancy check
urethra
Sperm survival specs
20. To remove/separate testicles from animal's body before animal reaches puberty
normal presentation of the fetus
eminal vesicles
castration
semen evaluation (BSE)
21. 114 days
visual evaluation (BSE)
prostate gland
retractor muscles
sow gestation
22. Sperm is produced here
humans: stress level vs sperm
functions of progestrone
seminiferous tubules
sow ovulation
23. (LH) causes female's egg to break (her period)
monorchid
retractor muscles
Lutinizing Hormone in females
rectal palpation (BSE)
24. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
growth lost from castration methods (knife & band)
Avg. bull specs
hormones
1. more cost effective - 2. powdered milk is in excess production
25. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
Blood
ewe gestation
mare estrus cycle
prostate gland
26. (switzerland) 2nd in size and milk production - most muscle -
Holstein Cow
Brown Swiss Cow
Jersey Cow
seminiferous tubules
27. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
sow estrus
rectal palpation (BSE)
ewe estrus cycle
Mares
28. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
Blood
organs used in spermatogenesis
functions of progestrone
pelvis
29. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis proper
ewe estrus cycle
Where livelihood is in agriculture
penis sizes vs delivering methods
30. Days which have increasing daylight hours
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31. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
why does the cow need fat deposits during pregnancy?
spermatogenesis
4 major reasons for culling dairy cows
Parturition
32. Animals which have many estrous periods per year (ex: cow - sow)
polyestrous
why does the cow need fat deposits during pregnancy?
feeding a high producing dairy cow
~1 month
33. 26 hours after estrus begins
Where livelihood is in agriculture
normal presentation of the fetus
hypothalamus and pituitary gland
ewe ovulation
34. 147 days
Dairy Cattle Lactation (standard)
ewe gestation
Jersey Cow
stag
35. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
retractor muscles
femininity of a heifer
eminal vesicles
36. 283 days
cremaster muscle
Brown Swiss Cow
cow gestation
Jersey Cow
37. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
prostate gland
visual evaluation (BSE)
Parturition
38. To remove/separate testicles from animal's body before animal reaches puberty
mastitis
castration
mare gestation
ewe estrus
39. Male on one pin and female on other side
libido test (BSE)
scrotal circumference (BSE)
Blood
age and castration
40. Why does estrus happen before ovulation?
organs used in spermatogenesis
scrotal circumference (BSE)
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
spermatogenesis
41. Animals which have only one estrous cycle (ex: dog - fox)
sperm cell
Culls bulls earlier (2 reasons)
what has to happen for males for copulation to occur
monestrous
42. 45-60 days after breeding; re-breed as required
Avg. bull specs
burdizzo
6-8 weeks
dairy cattle pregnancy check
43. Duct through penis that carries sperm and urine
cow estrus
effects of BST
urethra
Dairy Cattle milking schedule
44. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
uterus
urethra
Holstein Cow
Avg. bull specs
45. FEED
#1 cost in production
Follical Stimulating in males
cow estrus
polyestrous
46. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
Jersey Cow
kidney stones also called ________ ___________ can develop in the sigmoid flexure
van deferens
seasonally polyestrous
47. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Jersey Cow
mare's estrous cycle
hypothalamus and pituitary gland
48. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
penis and prepuce observation (BSE)
reason for seasonal breeding periods
6-8 weeks
sow estrus cycle
49. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
testosterone
cryptorchid
Brown Swiss Cow
50. Failure to have one testis (gonad) to descend
mare gestation
Size of cow in relation to the amount of milk produced
monorchid
ewe's estrous cycle
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